Electric bell.



8. A. BEYLAND.

ELECTRIC BELL. APPLICATION rmm APR.22.1904.

PATENTED AUG. 28, 190.6.

UNITED STATES SIDNEYA. BEYLAND, OF ELYRIAQOHIO ASSIGNOR TO OF ELYRIA,OHIO, A CORPORATION OF OHIO.

TRIO OOMPAN Y,

PATENT OFFICE.

THE DEAN ELEC- ELECTRIC BELL.

Specification of Letters Patent.

fatented Aug. 28, 1906.

To all whom/it may concern:

Be it known that I, SIDNEY A. BEYLAND, a citizen of the United States,residing at Elyria, in the county of Lorain and State of bio, haveinvented certain new and useful Improvements in Electric Bells, of whichthe following is a specification, reference being had herein to theaccompanying drawings.

My invention relates to bells, and particularly to those in which it isnecessary to adjust the position of the gongs with relation to theclappers or other parts.

It is the object of my invention to rovide means for such adjustmentwhich s all be simple, efficient, and eas to manipulate and which at thesame time s iall permit of a considerable variation in the size orpositionof the gongs.

I attain my object by mountin each upon a pivoted sup ort, preferab yattache to the frame of the ell, and making this su port irregular inshape, so that it Will aflor a certain playrin one direction .and when rversed will afford. the same amount of play in the other direction. Adouble amount of motion is thus secured without changin the parts andwithout sacrificing delicacy 0 adustment.

In all bells it is essential that a certain amount of ad'us'tment shallbe provided for between the c apper or striker and that art of the gongu on which it impinges. hile I recognize t e fact that my invention isthus applicable to bells which are operatedb mechanical means as well asto those in whic the energ is ap lied electrically, I have designed itor the lhtter class in particular, and in the resent case I shallillustrate and describe it as embodied in a polarized electric bell ofthe type employed in telephone systems. Such a bell is usually mountedupon a subscribers telephone set, afl'ordin means of advertising a callfor his station. oils of the same kind are also used for divers purposesin central stations-as, for instance, in connection with what are knownas gongboards, whereon'bells of different tones replace the ordinaryannunciator-drops. On such a board ongs of different sizes and tones areemplo e sometimes to the number of thirty or orty, includin those ofsuch different types as sleigh-bails, cow-bells, domed gon bells, andflat gongs'. Since their diameters vary as widely as their types andtones, it follows that it has been diilicult or impossible to rovide astandard mounting to take all of them. Again, at subscribers" stationsit is frequently necessary or desirable to var the tones of the gong; asin pnrty-line wor or in cases where there are several telephones in oneplace. In party-line work where selective signalin is practiced,employing currents of difIerent frequencir s,

' gongs of correspondingly different sizes and tones are often em loyed.A due re ard for economy forbids tl ie provision of a iflerent mountingfor every gong, and yet it has bee 11 found impossible heretofore tostandard mountingthat would ta 0 all the sizes interchangeably.

My present invention obviates all the difficulties stated, with manyothers, and renders it possible to employ one standard set of parts forthe ringer, uniform in their assemling and uniform in size, even to thegongposts, gongs of widely-varying size and shape eing supported bythese gongosts interchangeably, provided only that t e strikingoints areapproximatel the same distance rom the bases. Even t 's is notnecessary, however, if V clapper-rods of proper corresponding lengthsare provided.

In describing my invention hereinafter I shall assume that plain gongsof standard type and of diameters from two to three inches each are tobe employed. As this is a purely arbitrary course, imit myself thereby,although these are the dimensions most frequently met with in1pIractice.

y invention is fully illustrated in the accompanying drawings, whereinF1 re 1 is a side view of a polarized electric ell embodying myinvention, and Fi nx 2 is a top plan view thereof with gongs ofdifferent sizes indicated in dotted lines.

In the drawings, M indicates a pair of electromagnets mounted upon ayoke bar or base m, which carries also the permanent magnet M, by whoseinfluence the cores and armature A are maintained polarized, so that thearmature moves in response to alternating orl'uzelversed currents only.This armature 0 es a clapper-rod a and a clapper rovide a i assumption,I do not, of

transverse slot h for the accommodation of a limiting sct-screw h, whichis also tapped into the yoke-bar m. The slot h is preferably curved, thecenter of curvature being in the axis of the screw it; but this is notessential, provided the width of the slot is made a little greater thanthe diameter of the shank of the screw it. In connection with this formof adjuster I have illustrated in the drawings a method of armatureadjustment which I prefer to use. The armature is pivoted at a betweenupturned cars a on a yoke a. This yoke has its ends perforated, formingrings which encircle flanges secured to the u iper spool-heads F of theelectromagnets It. The flanges f are screw-threaded, and suitable'adjusting and locking nuts f f are fitted thereon, lying, res ectively,above and below the ends of the yo e a.

The method of assembling and adjusting the bell thus described will nowbe apparent. The electromagnets and the permanent magnet havin beenmounted upon the base or yoke m, the armature is first adjusted bymoving one end or the other of its yoke up and down until its oppositestrokes are equal and of maximum strength. The nuts f and f 2 are thenset up, so as to render this part of the adjustment permanent. Assumingthen that two-inch gongs are to be used, as shown in full lines at G inthe drawings, the curved plates or horns H are secured'to the yoke m,with their ends inclining inward from the pivots, as shown in Fig. Eachplate-may now be moved upon its pivot-screw); until its gong bearsexactly the proper relation to the clap )er (1. when the set-screws hare tightene to lock the plates against subsequent movement. To renderthe adjustment more secure, the pivot-screws it may likewise be set utightly, a double binding effect u on the p ates being thus possible. Ifeach s 0t 71 is of proper length to permit a motioi. )f onefourth inchfrom center to center of the extreme positions of the screw 71, therein,the gong-post and gong-centers will then have a play of one-half inch,with theplates ll in the positions shown in Fig. 2 -that is to say, anysize gong from the two-inch shown in solid lines at G to thetwo-and-one-half-inch shown in dotted lines at G can be accommodated andcan be adjusted with regard to theclapper. If it be desired to use astill larger gong, I reverse the 1plates I I. If the gong-posts G weredetacha )ly secured. to the plates, this reversal could be attained byremoving the posts and turning the plates. upside down. The gongquostsare usually riveted to the plates, hon ever, and the simplest way is toexchange the plates, that shown in full lines upon the right in Fig. 2being applied as indicated in dotted lines at the left ol' the samefigure, and vice versa. The innermost limit of movement of the gong-postcenter 72: is now in the line through the centers of the two screws h h,and the outermost limit is that shown in dotted lines. As this gives aplay of one-half inch and as the innermost mit calls for atwo-andonchalfinc,h gong, any gongs may now be used between thetwo-and-one-half inch size (indicated at G) and the three-inch,(indicated at G The adjustment with regard to the clapper a is the samein any case through the entire range of movement. .The armature adjusuient also remains the same throughout the entire range of adjustment ofthe gongs, and this adjustment is in every case rendered permanent bysimply tightening up the screws h and h, as already stated.

It will be observed that in this bell the numberof parts is reduced to aminimum and the design is such that a very rigid frame is roduced,composed of the operative parts, al of which are adjustable and all ofwhich are standard and interchangeable throughout. The only parts thatneed vary in size or style are the ongs themselves.

Having thus escribed my invention, what I claim, and'desire to secure byLetters Patcnt, is-

1. A ringer comprising a supportingframc, a gong-supportin member reversably seoured thereon an normally adjustable in one direction but whenreversed adapted having an eiual range of adjustmentin the opposite.irection which forms with the first movement a continuous path ofadjustment from a given point? 2. In a ringer, the combination with, asupport, of an arc-shaped member reversal) y pivoted to said support, agong-post secured to said member, a gong thereon, and means intermediatethe ivot and gong-post for adjusting said mem or when in either positionfrom a given point so as to form a continuous are of adjustment.

3. A ringer comprising a gong, a clapper and its actuatin parts, a gongholder or support having a limited range of movement normally in onedirection with respect to the clapper, together with interchan eableeonnectlons therefor whereby the irection of movement may be reversedand the range of adjustment continued in the opposite direction andthereby doubled.

4. An electric bell provided with a base or frame, a clapper, a pairofadjustablc gong supports pivotally secured to the base on oppositesides of the clapper, and adjusting same median line in the oppositedirection or means intern-e liate. the pivot and the gnngaway from theole per. 1 posts, each of said supports having a limited In testimony wereof I have affixedmy rangemf travel from a median line throughsignature in presence of two witnesses.

5 the plvot the adjusting means and the gong SIDNEY A. BEYLAND.

post, toward the 0121 per when in their ini- Witnesses: tial position,and W en reversed or inter- RAY H. MASIsON,

changed to have a range of travel from the WMLW. DEAN.

